Question

I have 2 questions, they're similar, but i have no idea. can someone please help me.

Answer 1

Answer:

First Picture:

$\sqrt{x} -3=3-\sqrt{x}\\\\\x-3=0\\ +3 +3\\x=3$

Second Picture:

$2/3(9x-6)-4=9x-6$

$(6x-4-4=9x-6\\6x-8=9x-6\\ -9 -9\\\\-3x-8=-6\\ \\+8 +8\\-3x=2\\\\x=-2/3$